Remove warning "URI.unescape is obsolete" from actionpack.

actionpack/lib/action_controller/caching/actions.rb

@@ -161,7 +161,11 @@ def initialize(controller, options = {}, infer_extension = true)
         def normalize!(path)
           path << 'index' if path[-1] == ?/
           path << ".#{extension}" if extension and !path.ends_with?(extension)
-          URI.unescape(path)
+          uri_parser.unescape(path)
+        end
+
+        def uri_parser
+          @uri_parser ||= URI.const_defined?(:Parser) ? URI::Parser.new : URI
         end
       end
     end

actionpack/lib/action_controller/caching/pages.rb

@@ -99,7 +99,7 @@ def caches_page(*actions)
 
         private
           def page_cache_file(path)
-            name = (path.empty? || path == "/") ? "/index" : URI.unescape(path.chomp('/'))
+            name = (path.empty? || path == "/") ? "/index" : uri_parser.unescape(path.chomp('/'))
             name << page_cache_extension unless (name.split('/').last || name).include? '.'
             return name
           end
@@ -111,6 +111,10 @@ def page_cache_path(path)
           def instrument_page_cache(name, path)
             ActiveSupport::Notifications.instrument("#{name}.action_controller", :path => path){ yield }
           end
+
+          def uri_parser
+            @uri_parser ||= URI.const_defined?(:Parser) ? URI::Parser.new : URI
+          end
       end
 
       # Expires the page that was cached with the +options+ as a key. Example:

actionpack/lib/action_controller/test_case.rb

@@ -127,7 +127,11 @@ def initialize(env = {})
     class Result < ::Array #:nodoc:
       def to_s() join '/' end
       def self.new_escaped(strings)
-        new strings.collect {|str| URI.unescape str}
+        new strings.collect {|str| uri_parser.unescape str}
+      end
+
+      def uri_parser
+        @uri_parser ||= URI.const_defined?(:Parser) ? URI::Parser.new : URI
       end
     end
 

actionpack/lib/action_dispatch/routing/mapper.rb

@@ -395,10 +395,10 @@ def map_method(method, *args, &block)
       #   namespace "admin" do
       #     resources :posts, :comments
       #   end
-      # 
+      #
       # This will create a number of routes for each of the posts and comments
       # controller. For Admin::PostsController, Rails will create:
-      # 
+      #
       #   GET	    /admin/photos
       #   GET	    /admin/photos/new
       #   POST	  /admin/photos
@@ -406,33 +406,33 @@ def map_method(method, *args, &block)
       #   GET	    /admin/photos/1/edit
       #   PUT	    /admin/photos/1
       #   DELETE  /admin/photos/1
-      # 
+      #
       # If you want to route /photos (without the prefix /admin) to
       # Admin::PostsController, you could use
-      # 
+      #
       #   scope :module => "admin" do
       #     resources :posts, :comments
       #   end
       #
       # or, for a single case
-      # 
+      #
       #   resources :posts, :module => "admin"
-      # 
+      #
       # If you want to route /admin/photos to PostsController
       # (without the Admin:: module prefix), you could use
-      # 
+      #
       #   scope "/admin" do
       #     resources :posts, :comments
       #   end
       #
       # or, for a single case
-      # 
+      #
       #   resources :posts, :path => "/admin"
       #
       # In each of these cases, the named routes remain the same as if you did
       # not use scope. In the last case, the following paths map to
       # PostsController:
-      # 
+      #
       #   GET	    /admin/photos
       #   GET	    /admin/photos/new
       #   POST	  /admin/photos

actionpack/lib/action_dispatch/routing/route_set.rb

@@ -66,7 +66,11 @@ def merge_default_action!(params)
         end
 
         def split_glob_param!(params)
-          params[@glob_param] = params[@glob_param].split('/').map { |v| URI.unescape(v) }
+          params[@glob_param] = params[@glob_param].split('/').map { |v| uri_parser.unescape(v) }
+        end
+
+        def uri_parser
+          @uri_parser ||= URI.const_defined?(:Parser) ? URI::Parser.new : URI
         end
       end
 
@@ -543,7 +547,7 @@ def recognize_path(path, environment = {})
           params.each do |key, value|
             if value.is_a?(String)
               value = value.dup.force_encoding(Encoding::BINARY) if value.encoding_aware?
-              params[key] = URI.unescape(value)
+              params[key] = uri_parser.unescape(value)
             end
           end
 
@@ -560,6 +564,10 @@ def recognize_path(path, environment = {})
       end
 
       private
+        def uri_parser
+          @uri_parser ||= URI.const_defined?(:Parser) ? URI::Parser.new : URI
+        end
+
         def handle_positional_args(options)
           return unless args = options.delete(:_positional_args)